I'd be happy to help if you decide to add a translation of Latin! I'm taking it in high school.
I also know a bit of German, but I don't think that would help- emphasis on a bit. And I mean, like katzen means cat, and hund means dog, et cetera. And I can't spell in German. :3

Just a thought: it would be nice to start with translations of core concepts, like "next action", "goal", "due date" and so on, before they go into longer strings or sentences, as I now see (in the Swedish translations) several cases where different translated strings uses different translations of these concepts.
Neither is it a simple matter of asking toodledo's staff to do a final search&replace on the final translation to settle on e.g. one of the options "mål"/"målsättning" (for 'goal'), as they have different gender and would require changes in some adjectives as well.*

*Yes, I finally found one case where there was a 9 character limitation for this particular string, invalidating the latter option, but I have not had the energy to go back and make sure I voted for/added the shorter in every single string...

For what it's worth. I was looking at the French translation, and there are some translations that are simply impossible to do without more context. French has "gendered" adjectives and without knowing what something like "recent" for example refers to (a task, a folder, tasks, folders?) there is no way we can translate it accurately.

Same thing with such words as "any". Depending on the context, this might be translated in many different ways.